title: Two cases of neuroblastoma comprising two distinct clones.
abstract: We report two cases of high-risk metastatic neuroblastoma, comprising two biologically distinct components in the adrenal primary tumor, which showed clear differences not only histologically but also in MYCN amplification and HA-RAS/TRKA immunoreactivity (Case 1), anaplastic lymphoma kinase (ALK) immunoreactivity (Case 2). These two cases with multiple separated components were similar to cases classified as ganglioneuroblastoma, nodular subtype (GNBn), in terms of composite tumor. Comparable to the GNBn category, the prognosis of the patients described here may depend on the components with unfavorable histology according to International Neuroblastoma Pathology Classification. Further analyses of such composite neuroblastoma cases are important for assessing disease prognosis.
authors.affiliation: Department of Pediatrics, Keio University School of Medicine, Tokyo, Japan.
authors.forename: Fumito
authors.initials: F
authors.lastname: Yamazaki
authors.forename: Atsuko
authors.initials: A
authors.lastname: Nakazawa
authors.forename: Tomoo
authors.initials: T
authors.lastname: Osumi
authors.forename: Naoki
authors.initials: N
authors.lastname: Shimojima
authors.forename: Takeo
authors.initials: T
authors.lastname: Tanaka
authors.forename: Akira
authors.initials: A
authors.lastname: Nakagawara
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Shimada
mesh_terms: D000310:Adrenal Gland Neoplasms / Q000145:classification / Q000235:genetics / Q000473:pathology*; D000077548:Anaplastic Lymphoma Kinase; D014408:Biomarkers, Tumor / Q000235:genetics / Q000378:metabolism*; D005784:Gene Amplification; D011905:Genes, ras / Q000502:physiology; D006801:Humans; D007223:Infant; D008297:Male; D000071447:N-Myc Proto-Oncogene Protein; D009447:Neuroblastoma / Q000145:classification / Q000235:genetics / Q000556:secondary*; D009687:Nuclear Proteins / Q000235:genetics; D015513:Oncogene Proteins / Q000235:genetics; D011379:Prognosis; D020794:Receptor Protein-Tyrosine Kinases / Q000378:metabolism; D020917:Receptor, trkA / Q000378:metabolism
chemical_list: D014408:Biomarkers, Tumor; C459801:MYCN protein, human; D000071447:N-Myc Proto-Oncogene Protein; D009687:Nuclear Proteins; D015513:Oncogene Proteins; C000626173:ALK protein, human; D000077548:Anaplastic Lymphoma Kinase; D020794:Receptor Protein-Tyrosine Kinases; D020917:Receptor, trkA
keywords: ganglioneuroblastoma; international neuroblastoma pathology classification; neuroblastoma